[GRASS-user] azimuth of lines with v.to.db?

[Hamish]

Carlos wrote:
> This is almost what I need. I need the results to be in range 0-360,
> from North. So I can get a rose diagram, with petals weighted
> according to azimuth frequency or to azimuth lenght, like the
> attachment.

convert CCW-from-east to CW-from-north with 90-theta


Hamish




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